<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/welcome' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <!--头部搜索栏 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
            <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddpage" style="margin-left:20px">添加商品</el-button>
        </el-col>
      </el-row>
      <!-- table表格区域 -->
      <el-table :data="goodsList" border stripe>
        <!-- 索引列 -->
        <el-table-column type="index" label="编号"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name"></el-table-column>
        <el-table-column width="95px" label="商品价格(元)" prop="goods_price"></el-table-column>
        <el-table-column width="70px" label="商品重量" prop="goods_weight"></el-table-column>
        <el-table-column width="140px" label="创建时间" prop="add_time">
          <!-- 插槽形式使用时间过滤器 -->
          <template slot-scope="scope">{{scope.row.add_time*1000|dateFormat}}</template>
        </el-table-column>
        <!-- 编辑删除操作按钮 -->
        <el-table-column width="130px" label="操作">
          <template slot-scope="scope">
            <el-button type="primary" size="mini" icon="el-icon-edit"></el-button>
            <el-button
              type="danger"
              size="mini"
              icon="el-icon-delete"
              @click="removeGoods(scope.row.goods_id)"
            ></el-button>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      ></el-pagination>
    </el-card>
  </div>
</template>
<script>
export default {
  data() {
    return {
      // 查询参数对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 5
      },
      //   商品列表
      goodsList: [],
      //   商品总数
      total: 0
    }
  },
  methods: {
    //   获取列表数据的方法
    async getGoodsList() {
      const { data: res } = await this.$http.get('goods', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品列表失败!')
      }
      this.goodsList = res.data.goods
      this.total = res.data.total
      console.log(this.goodsList)
    },
    // 点击添加商品按钮 开启编程式导航
    goAddpage() {
      this.$router.push('/goods/add')
    },
    //  每页条数发生变化
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    // 当前页码发生变化
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },
    //  删除功能
    async removeGoods(goodsId) {
      // 弹框提示
      const confirmResult = await this.$confirm(
        '此操作将永久删除该文件, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)
      //   取消删除  给出提示
      if (confirmResult !== 'confirm') {
        return this.$message.info('取消了本次删除!')
      }
      //   确定删除  发送请求
      const { data: res } = await this.$http.delete(`goods/${goodsId}`)
      if (res.meta.status !== 200) {
        return this.$message.error('删除商品失败!')
      }
      this.$message.success('删除商品成功!')
      this.getGoodsList()
    }
  },
  created() {
    //   页面加载获取列表数据
    this.getGoodsList()
  }
}
</script>
<style lang="less" scoped>
.el-pagination {
  margin: 20px;
}
</style>
